COSEISMIC DEFORMATION OF THE 2020 BENGKULU MW 6.8 EARTHQUAKE USING INSAR DATA

Ongky Anggara, Satrio Muhammad Alif

Abstract

An earthquake with a seismic moment magnitude of Mw 6.8 occurred in Bengkulu province, located on the southwestern coast of Sumatra, on August 18, 2020. This study aims to assess the application of the differential interferometric synthetic aperture radar (DInSAR) method to detect and analyze coseismic deformation due to this earthquake using the Sentinel-1A radar satellite. The results of the DInSAR did not yield significant coseismic signals with the range of Line of Sight (LOS) displacement of ~-40 mm to ~40 mm. The InSAR data did not detect clear deformation patterns or displacements associated with the August 18, 2020 earthquake. Further investigations are needed to understand the limitations of InSAR in detecting coseismic signals for this specific event. Integrating these datasets can provide a more comprehensive understanding of the earthquake source, fault characteristics, and associated deformation patterns.

Keywords

Bengkulu earthquake, Deformation, Coseismic, InSAR, Sentinel 1

Full Text:

PDF

References

Albano, M., Saroli, M., Montuori, A., Bignami, C., Tolomei, C., Polcari, M., Pezzo, G., Moro, M., Atzori, S., Stramondo, S., & Salvi, S. (2018). The relationship between InSAR coseismic deformation and earthquake-induced landslides associated with the 2017 Mw 3.9 Ischia (Italy) earthquake. Geosciences (Switzerland), 8(8). https://doi.org/10.3390/geosciences8080303

Alif, S. M., Anggara, O., Ristiana, V., & Engineering, G. (2023). Jurnal Geografi Gea Coherence Analysis of Sentinel-1A Images in Various Land. 23(2), 135–143. https://doi.org/10.17509/gea.v23i2.61258

Alif, S. M., Fattah, E. I., Kholil, M., & Anggara, O. (2021). Source of the 2019 Mw6.9 Banten Intraslab earthquake modelled with GPS data inversion. Geodesy and Geodynamics, 12(4), 308–314. https://doi.org/10.1016/j.geog.2021.06.001

Amani, M., Poncos, V., Brisco, B., Foroughnia, F., DeLancey, E. R., & Ranjbar, S. (2021). InSAR Coherence Analysis for Wetlands in Alberta, Canada Using Time-Series Sentinel-1 Data. Remote Sensing, 13(16). https://doi.org/10.3390/rs13163315

Anggara, O., Alif, S. M., Pratama, A. W., Melvin, W. (2024). Uji Signifikansi Stasiun GPS Kontinu dan Periodik dalam Identifikasi Pergerakan Koseismik. 13(1), 89–95. https://doi.org/10.25077/jfu.13.1.89-95.2024

Anggara, O., Welly, T. K., Fauzi, A. I., Alif, S. M., Perdana, R. S., Oktarina, S. W., Nuha, M. U., & Rosadi, U. (2023). Monitoring ground deformation of Sinabung volcano eruption 2018-2019 using DInSAR technique and GPS data. AIP Conference Proceedings, 2654(February). https://doi.org/10.1063/5.0114428

Ardika, M., Meilano, I., & Gunawan, E. (2015). Postseismic deformation parameters of the 2010 M7.8 Mentawai, Indonesia, earthquake inferred from continuous GPS observations. Asian Journal of Earth Sciences, 8(4), 127–133. https://doi.org/10.3923/ajes.2015.127.133

Chen, C. W., & Zebker, H. A. (2002). Phase unwrapping for large SAR interferograms: Statistical segmentation and generalized network models. IEEE Transactions on Geoscience and Remote Sensing, 40(8), 1709–1719. https://doi.org/10.1109/TGRS.2002.802453

Dziewonski, A. M., Chou, T. A., & Woodhouse, J. H. (1981). Determination of earthquake source parameters from waveform data for studies of global and regional seismicity. Journal of Geophysical Research, 86(B4), 2825–2852. https://doi.org/10.1029/JB086iB04p02825

Fang, J., Xu, C., Wen, Y., Wang, S., Xu, G., Zhao, Y., & Yi, L. (2019). The 2018 Mw 7.5 Palu earthquake: A supershear rupture event constrained by InSAR and broadband regional seismograms. Remote Sensing, 11(11). https://doi.org/10.3390/rs11111330

Funning, G. J., & Garcia, A. (2019). A systematic study of earthquake detectability using Sentinel-1 InterferometricWide-Swath data. Geophysical Journal International, 216(1), 332–349. https://doi.org/10.1093/gji/ggy426

Goldstein, R. M. (1998). Radar interferogram filtering for geophysical applications. 1–9. https://doi.org/10.1029/1998gl900033

Jacob, A. W., Notarnicola, C., Suresh, G., Antropov, O., Ge, S., Praks, J., Ban, Y., Pottier, E., Mallorqui Franquet, J. J., Duro, J., Engdahl, M. E., Vicente-Guijalba, F., Lopez-Martinez, C., Lopez-Sanchez, J. M., Litzinger, M., Kristen, H., Mestre-Quereda, A., Ziolkowski, D., & Lavalle, M. (2020). Sentinel-1 InSAR Coherence for Land Cover Mapping: A Comparison of Multiple Feature-Based Classifiers. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 13, 535–552. https://doi.org/10.1109/JSTARS.2019.2958847

Li, Y., Jiang, W., Zhang, J., Li, B., Yan, R., & Wang, X. (2021). Sentinel-1 SAR-Based coseismic deformation monitoring service for rapid geodetic imaging of global earthquakes. Natural Hazards Research, 1(1), 11–19. https://doi.org/10.1016/j.nhres.2020.12.001

Meilano, I., Salman, R., Rahmadani, S., Shi, Q., Susilo, S., Lindsey, E., Supendi, P., & Daryono, D. (2021). Source Characteristics of the 2019 Mw 6.5 Ambon, Eastern Indonesia, Earthquake Inferred from Seismic and Geodetic Data. Seismological Research Letters, 92(6), 3339–3348. https://doi.org/10.1785/0220210021

Monterroso, F., Bonano, M., Luca, C. De, Lanari, R., Manunta, M., Manzo, M., Onorato, G., Zinno, I., & Casu, F. (2020). A Global Archive of Coseismic DInSAR Products Obtained Through Unsupervised Sentinel-1 Data Processing. Remote Sensing, 12(19). https://doi.org/10.3390/rs12193189

Mora, O., Ordoqui, P., Iglesias, R., & Blanco, P. (2016). Earthquake Rapid Mapping Using Ascending and Descending Sentinel-1 TOPSAR Interferograms. Procedia Computer Science, 100, 1135–1140. https://doi.org/10.1016/j.procs.2016.09.266

Natadikara, R., Fauzi, A. I., Anggara, O., Perdana, R. S., Alif, S. M., Julzarika, A., Nurtyawan, R., & Rohman, A. (2023). Monitoring Deformation of Anak Krakatoa Volcano Using Differential Interferometry Synthetic Aperture Radar (DInSAR) Method. AIP Conference Proceedings, 2941(1). https://doi.org/10.1063/5.0181540

PuSGeN. (2017). Peta sumber dan bahaya gempa Indonesia tahun 2017. Pusat Penelitian dan Pengembangan Perumahan dan Permukiman Badan Penelitian dan Pengembangan Kementerian Pekerjaan Umum dan Perumahan Rakyat.

Sandwell, D., Mellors, R., Tong, X., Xu, X., Wei, M., & Wessel, P. (2010). GMTSAR Software for Rapid Assessment of Earthquakes. AGU Fall Meeting Abstracts. Suresh, D., & Yarrakula, K. (2020). InSAR based deformation mapping of earthquake using Sentinel 1A imagery. Geocarto International, 35(5), 559–568. https://doi.org/10.1080/10106049.2018.1544289

Tanioka, Y., Yudhicara, Kususose, T., Kathiroli, S., Nishimura, Y., Iwasaki, S. I., & Satake, K. (2006). Rupture process of the 2004 great Sumatra-Andaman earthquake estimated from tsunami waveforms. Earth, Planets and Space, 58(2), 203–209. https://doi.org/10.1186/BF03353379

Vigny, C., Simons, W. J. F., Abu, S., Bamphenyu, R., Satirapod, C., Choosakul, N., Subarya, C., Socquet, A., Omar, K., Abidin, H. Z., & Ambrosius, B. A. C. (2005). Insight into the 2004 Sumatra-Andaman earthquake from GPS measurements in southeast Asia. Nature, 436(7048), 201–206. https://doi.org/10.1038/nature03937

Wessel, P., Smith, W., Scharroo, R., Luis, J., & Wobbe, F. (2013). Generic Mapping Tools: Improved Version Released. Eos Transactions American Geophysical Union, 94. https://doi.org/10.1002/2013EO450001

Yang, C., Han, B., Zhao, C., Du, J., Zhang, D., & Zhu, S. (2019). Co- and post-seismic Deformation Mechanisms of the MW 7.3 Iran Earthquake (2017) Revealed by Sentinel-1 InSAR Observations. Remote Sensing, 11(4). https://doi.org/10.3390/rs11040418

Yu, C., Li, Z., Chen, J., & Hu, J. C. (2018). Small magnitude co-seismic deformation of the 2017 Mw 6.4 Nyingchi earthquake revealed by InSAR measurements with atmospheric correction. Remote Sensing, 10(5). https://doi.org/10.3390/rs10050684

Zhao, D., Qu, C., Shan, X., Gong, W., Zhang, Y., & Zhang, G. (2018). InSAR and GPS derived coseismic deformation and fault model of the 2017 Ms7.0 Jiuzhaigou earthquake in the Northeast Bayanhar block. Tectonophysics, 726, 86–99. https://doi.org/https://doi.org/10.1016/j.tecto.2018.01.026

DOI: https://doi.org/10.20961/ge.v11i1.90987

Refbacks

  • There are currently no refbacks.